I'm about to buy an old (2001) bike - need old ppl's advice

[.blue]

Quality responses, thanks everyone. SRob - I can't even tell what part of the bike you have photographed

[lindrup119]

.blue said:

Quality responses, thanks everyone. SRob - I can't even tell what part of the bike you have photographed

Moving up and on from the Ninja?

[SHutchinson]

podman said:

rat840771 said:

A 2000 GSXR should be injected?

Pre 96/97 was carb

Yes. The GSXR will be F.I

Carbs do have a certain charm but require regular fettling to keep them sweet and do eventually wear so bad that becomes trickier to do.

My 1999 GSXR SRAD very definitely has carbs and a choke lever. Haven't spotted a fuel tap though, probably haven't looked hard enough.

[crofty1984]

Are you SURE it's on/off/reserve? A lot of bikes have a vacuum tap so you'll have
On - petrol flows when valve is held open by engine vacuum
Reserve - The same, but the feed is from a bit lower in the tank
Prime - tap is fully open. Used for filling the float bowls when dry and for draining the tank. Not a day-to-day setting.

The valve automatically springs to "off" whenever the engine isn't turning.

[podman]

SHutchinson said:

podman said:

rat840771 said:

A 2000 GSXR should be injected?

Pre 96/97 was carb

Yes. The GSXR will be F.I

Carbs do have a certain charm but require regular fettling to keep them sweet and do eventually wear so bad that becomes trickier to do.

My 1999 GSXR SRAD very definitely has carbs and a choke lever. Haven't spotted a fuel tap though, probably haven't looked hard enough.

The 600 had carbs until 2000, the 750 was F.I from 1998...

[graham22]

kenloen said:

Or worse, it overflows into the engine. I had a ZX9R with a float shutoff seal leaking and it twice filled the engine with petrol because I forgot the fuel tap off a mile from home trick. Hydraulic lock and full drain and oil change. Specific carbs to that model ZX9R (E1) where parts are 10x normal costs, I got rid.. best move ever, fuel taps and carbs are from another era..

Exactly my concern, especially on a bike left on a side stand, all it needs is a slightly sticking float or low float height plus an open inlet valve.

It doesn't take much to turn it off, also keeps the tap free so if you need to turn it off to remove the tank you at least know it will turn.

2000/2001 bike, how about a Fireblade of that era or 98/99 if you are trying to avoid fuel injection.

As also said above, having carbs balanced correctly makes a world of difference.

[Mr2Mike]

crofty1984 said:

Surely these would have vacuum traps that would stop this?

I'd have thought so, did they make any mid-late 90's 600-1000cc carb'd bikes without a vacuum tap? The only time I actually turn my fuel tap to 'Off' is if I need to remove the tank, and that's only as a precaution.

[graham22]

Mr2Mike said:

crofty1984 said:

Surely these would have vacuum traps that would stop this?

I'd have thought so, did they make any mid-late 90's 600-1000cc carb'd bikes without a vacuum tap? The only time I actually turn my fuel tap to 'Off' is if I need to remove the tank, and that's only as a precaution.

Carb Blades were a manual tap, did feed to a fuel pump though for when tank level went below carb height.

[Mr2Mike]

graham22 said:

Carb Blades were a manual tap, did feed to a fuel pump though for when tank level went below carb height.

I have a carb'd Blade and it's most definitely got a vacuum operated tap, and no fuel pump. Mines a '99 so maybe the early ones are different?

[Löyly]

998420 said:

Yes, but the engine is still cold, metals and oil cold and not at correct operating temperature.... It still needs warming up like a carbed bike....

Yes, I'm not saying I rag it from cold. It's just nice to be able to get on and ride whilst the fuelling adjusts itself. My CG125 needed a good five minutes on very cold nights, before it'd go reliably without bogging and stalling.

[podman]

Mr2Mike said:

crofty1984 said:

Surely these would have vacuum traps that would stop this?

I'd have thought so, did they make any mid-late 90's 600-1000cc carb'd bikes without a vacuum tap? The only time I actually turn my fuel tap to 'Off' is if I need to remove the tank, and that's only as a precaution.

In theory, your quite right but the rubber diaphragm perishes over time and fuel just flows thru anyway, my friends KR1S did this and he ended up with a whole expansion crankcase and exhaust full of petrol, its more common than you think, all of the tap rebuild kits usually include the diaphragm

My 350LC has just recently developed a (non vac)leaky tap and the LH carb float/needle isnt doing its job so I have to fix that but at the moment its Summer and just want to ride the thing so a hose clamp is doing the job until year end..

[Gunk]

Mr2Mike said:

graham22 said:

Carb Blades were a manual tap, did feed to a fuel pump though for when tank level went below carb height.

I have a carb'd Blade and it's most definitely got a vacuum operated tap, and no fuel pump. Mines a '99 so maybe the early ones are different?

My 1994 893 'Blade is the same, no fuel pump.

[Tommo13]

Gunk said:

Mr2Mike said:

graham22 said:

Carb Blades were a manual tap, did feed to a fuel pump though for when tank level went below carb height.

I have a carb'd Blade and it's most definitely got a vacuum operated tap, and no fuel pump. Mines a '99 so maybe the early ones are different?

My 1994 893 'Blade is the same, no fuel pump.

Somebody may have removed it Gunk ? 92 - 95 should have a fuel pump but lots of owners took them off and left them gravity fed. 96 on had no pump as it was eliminated by Honda on the 918cc engine. Then reintroduced on the 2000 RRY model when it went to injection ?

[Della]

I've had my 2002 Yamaha R6 for about 5 years now. Last one on carbs before Yamaha went to fuel injection. Sounds lovely when closing in on the 15,700 rpm limit.
No fuel tap on my bike (only under the tank when servicing - can't reach it normally).
I'm looking for a 1000cc super sports bike now but I really want to keep the 600 as well. Maybe they will become modern classics in the not too distant future.

[Bakazan]

On my cbr600 the throttle response drains away as the fuel runs out from the main tank and it's time to switch to reserve. This is fine on motorways and dual carriageways but on A roads or back roads it's good to get a feel for this so you can flick the lever over before it runs out.

[Sea Demon]

Ive also just gone from FI to carbs, SV650s to a 900RR Fireblade (1998) - I use it everyday, will the carbs still gum up over time or will the amount its used keep them clean? I absolutely love it!

[Prof Prolapse]

Gunk said:

Mr2Mike said:

graham22 said:

Carb Blades were a manual tap, did feed to a fuel pump though for when tank level went below carb height.

I have a carb'd Blade and it's most definitely got a vacuum operated tap, and no fuel pump. Mines a '99 so maybe the early ones are different?

My 1994 893 'Blade is the same, no fuel pump.

My 99 CBR600F runs without the fuel pump unless you're unlucky.

Took me about a year to realise why it would almost randomly die and restart fine.

[battered]

Sea Demon said:

Ive also just gone from FI to carbs, SV650s to a 900RR Fireblade (1998) - I use it everyday, will the carbs still gum up over time or will the amount its used keep them clean? I absolutely love it!

Should be OK. You might want to apply a bit of carb cleaner now and again to remove any lacquer/sticky waxy deposits left behind by evaporating petrol, but that's just servicing. Over time there will be a bit of wear that might need some maintenance, but that's something we can all get to grips with.

[srob]

Sea Demon said:

Ive also just gone from FI to carbs, SV650s to a 900RR Fireblade (1998) - I use it everyday, will the carbs still gum up over time or will the amount its used keep them clean? I absolutely love it!

Using carbs is far better than having them stand not being used!

It tends to be 'stale' fuel that gums them up

[998420]

[quote=Löyly]

Yes, I'm not saying I rag it from cold. It's just nice to be able to get on and ride whilst the fuelling adjusts itself. My CG125 needed a good five minutes on very cold nights, before it'd go reliably without bogging and stalling.

[/quote]

No, i wasnt saying you do really, more an observation that the old carb bikes "rough as a badgers arse fuel map" carbed bikes have more chance of being properly warmed up before use by da yoof innit than the new FI stuff.